meteor-astronomy: Nested class as array - bug in saving

Steps:

It throws an error saying: MongoError: Cannot update <nestedClass> and <nestedClass.0.nestedClassField> at the same time.

About this issue

I should mention that in the example I gave before, I first set the new response via:

obj.set('responses.0', new SL.M.EndpointResponse());
obj.set('responses.0.codes', [200,500]);
obj.save(); // error

That is a very simplified example. In reality, those steps happen in disparate parts/components of my app. Otherwise I’d obviously do a simple:

obj.set('responses.0', new SL.M.EndpointResponse({codes: [200, 500]}));
obj.save();